CUPS 7.0 and VPN... is there anyway to get it to work?

Mine is sporatic, it's driving me nuts. Sometimes I login and I get the correct presence of myself. I can change from DND to away, etc, idle works, etc. Somewhere in the night, it started to work on its own. I played around with it this morning and it was working. (could not see other status though.) I logged out and logged back in, now it's offline.

ASA is believe is 8.04 SSL vpn. I tried with IPSEC also and not much luck either.

Re: CUPS 7.0 and VPN... is there anyway to get it to work?

Whether it's a CUPS/CUPC issue or a VPN issue is always a debatable topic.

Technically, it's a network issue. But the arguing point is "why other applications work fine except CUPC?"

This is due to the "call-back" in SIP.

For most of other application, the client (your laptop) initiate the connection to server. Server returns traffic to the source port. Most of the firewall/VPN was designed to cater this kind of traffic pattern.

For CUPC, the client tells the server what port the client is listening. Whenever there's an update, the server initiate the connection to the "call-back" port. Most of firewall/VPN will block this kind of traffic because it's considered "intrusion" to the client.

WAN optimizer (WAAS) would also add complexity to the picture. The symptom is TCP handshake failed.

Re: CUPS 7.0 and VPN... is there anyway to get it to work?

By default CUPS uses a UDP based SIP Proxy. SIP over UDP tends to get clobbered by firewalls. Change the proxy to use TCP based signaling instead, under the Personal Communicator section, and see if that doesn't make your CUPC client behave better.

Re: CUPS 7.0 and VPN... is there anyway to get it to work?

When I troubleshoot Cisco Presence I generally start at the same switch the server is connected to and verify functionality. Then I go downstream to the next switch and so on until it breaks. From there you can figure out what the switch/router/firewall/VPN is doing to Presence.

Re: CUPS 7.0 and VPN... is there anyway to get it to work?

If you look at the Server Health in CUP Client, you will see the Client unable to connect to presence. If so edit the host files of the OS and include the fully qualified domain name of The CUP Server.

Also make sure DNS is configured properly Inc DHCPLease the VPN Client get, CUCM, CUPS etc... It's all DNS!! Also best to upgrade to the latest CUPS update! Nico

Re: CUPS 7.0 and VPN... is there anyway to get it to work?

Cisco Webex Calling is a cloud service that offers enterprise-grade calling features delivered from the Cisco Webex cloud. This platform is part of the complete Webex collaboration suite that serves the calling, messaging, meeting, team collaboration and...
view more

Cisco SX20 camera moving left right and shaking continuously. We have factory reset the devices still it is a same problem. Even change the camera of working devices with issue devices still the problem.Now the software version of the device is&nbsp...
view more

Hello Experts. We would like to write macro to create a button to switch sources during a call. The only possible view today is content on upside and participants down. This is not the best experience for user's perspective. Someone, could ...
view more

Joining Webex Meetings just got significantly faster – with fewer clicks and less time that’s needed to get into your meetings on desktop and mobile apps.
With our email template simplification, you can enjoy a sin...
view more